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Solution: Reverse Vowels
Problem Statement
Given a string s
, reverse only all the vowels in the string and return it.
The vowels are 'a'
, 'e'
, 'i'
, 'o'
, and 'u'
, and they can appear in both lower and upper cases, more than once.
Example 1:
Input: s= "hello"
Output: "holle"
Example 2:
Input: s= "AEIOU"
Output: "UOIEA"
Example 3:
Input: s= "DesignGUrus"
Output: "DusUgnGires"
Constraints:
1 <= s.length <= 3 * 105
s
consist of printable ASCII characters.
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